John Kerry: “I believe that is a cheap line by some people to garner headlines and not a serious discussion of what is going on in…”

I mean, we try to help the world.

It's very obvious that there are huge threats here.

There is no current proposal or plan that has been agreed to which would require us to do that.

the U.N. Finance Analysis suggests that it will cost trillions of dollars. Maybe $2.5 to $4.5 trillion a year between now and 2050.